Piston ring



g G. COLE ET AL PXSTON RING yam/ 6 mi Filed Elarch 18. 1922 rsra p" ay i. a is i is i l fiifidLdiZGN SOLE 51.3KB BRA I). GINTHER, GI DIEGG, GALIFQREHLA.

rrs'roie sine.

Application filed. Biarch 18, 1922.

Tool? whom it may concern:

Be it known that we, Snmronli. Cow: and ORA D. GINTHER, citizens ot' the United States, residing at San Diego, in the county of San Diego and State ot' California, have invented certain new and useful Improve.- ments in Piston Rings, of which the following is a specification, reference being had to the accompanying drawings.

It is the purpose of the present invention to prevent the excessive oil or lubricant from passing or feeding between the cylinder wall and the piston, and upwardly into the combustion chamber of the cylinder as the piston reciprocates. As the piston travels downwardly in the cylinder one edge of the ring scrapes the oil or lubricant down and from the cylinder wall, and as the piston moves upwardly the other edge of the ring scrapes or cleans the oil or lubricant from the cylinder wall, thereby causing the lubricant to collect in a rabbet oi the ring.

Another purpose is the provision of a plurality oi notches on one face of the ring adjacent the midst, enabling the lubricant or oil to pass from the rabbet into the ring groove of the piston, and subsequently pass.

from the ring} groove through apertures or openings or the piston Wall, and deposit hack into the crank case.-

It is to he understood that the particulars herein iven are in no way limitative and that While still keeping within the scope of the invention, any desired modifications of detaii and desired proportions be made in the apparatus according to circumstances.

The invention comprises further features andcombination oi parts, as will be herein after set forth, shown in the drawings and claimed.

in the drawings Figure 1 is a sectional view through a portion of engine cylinder, showing piston therein equipped with a plurality of piston rings, one of which is constructed. in accordance with the invention;

Figure 2 is an enlarged detail sectional view of a portion of the piston and the wali of the cylinder, showing the ring groove with the piston ring mounted therein, in order to clearly disclose the construction;

Figure 3 is an enlarged detail perspective view of a portion of the improved piston ring; 4

ligin'e l is an enlarged detail perspective view of a: portion of e modified form of im Serial No. 5%,865.

proved piston ring. wherein a beveled joint is employed in the ring, instead of a lap joint as in Figure 3.

Referring to the drawings, 1 designates a. portion of an engine cylinder, wherein a piston 2 is mounted. The piston is provided with a plurality of piston ring grooves 3 3 there being a plurality of passageways or openings 4- connnunicatively connecting the lowermost ring groove 3*- and the interior of the piston, for the purpose of conveying oil' or lubricant to the interior of the piston, trom whence .it may travel back into the crank case. Mounted in the ring grooves 3 of the piston are piston rings of the usual construction and in the ring groove 3 an improved ring constructed. in accordance with my invention is disposed. Each of the rings will be constructed in the usual manner and is of the split expansible inetallic type.

Our improved ring has an annular groove or rabbet 7 on its outer face, and which is substantially i -shaped. The groove 7 comprises an upper wall, which, is constructed at right angles to the cylindrical outer face of the ring, whereas its other or lower wall 8 is constructed at an inclination to the outer cylindrical face of the ring. "ihis inclined wall 8 connects with the outer wall of the! ring adjacent the bottom thereof and combines with the bottom wall of the ring to provide at the lower cdpge of the ring a. restricted or narrow face 13 slidably abutting the wall of the cylinder.

The outer cylindrical of the ring at a point vertically spaced from the groove or rabbet 7 is provided with an annular rabbet 9 removing the upper corner thereof, the lower wall of the rabbet. being at right angles to the cylinder wall or to the axis of the ring The upper face 10 of the ring is provided with a plurality of notches 11, pres erably V-shaped. extending entirely thereacross and. acting to connect the rahbet 9 with the back of the ring and accordingly when the ring is in position in the groove with the space between the back of the ring and the opposed wall. of the piston.

As previously stated. the ringis of the split expansible kind. due to the lap joint 6, so that when the ring is applied to the piston,- it is sprung into the groove 6, and when the piston is inserted in the chamber of the cylinder, the ring is contracted sufficiently to permit it to enter the cylinden fl ue to the ion from x 1 no. i: iriwelsback 5o tho cmni:

opposito ivmtmn incimatod by the 5.

the sna'i'iow edge (whim), is; adjacom'; tho inciinad m1? of no groove 91' abbot '7) the face oi: the ring: o nposiie he rab'ne'b 9 viii swaps tho ubi'icam b from the wall oi the cnamber of ii cylinder. In (who? WQYQE; the lubricant, when the piiaton is tmveiing in 2.119 (iii'eciion of the arrow Z), may 'bo scraped of; fi'om tho cyiimior Wall. aiui 0011966 in tho groova or i zibbci; I".

That, portion of filo iuiwmm collected in the groove 7 ends to pass iilZ'Gi'lfli'i iiiie ends of the lap joint as m, H. and illil's H19 rah-- bet. 9, from whence it may pass to and through the. passages :1, info file iui'oriol' oi the piston, and theme back to the. crank case.

In Figure, 4 the ring is provided with a, beveled overlapping joint 15, instead of the form of hip join'i in Figure In 'eiiher the ring is contracted sufiiciently afoer it is agpiiad to the piston. so that ii; may easily e312 2 the chamber of the cylinder.

The invention i'iaving been forth, What; is claimed -srv 1. piston ring," adapted for use in the: oil ring" grooves of pistons having saici oil ring in communioatioii with the in" torior of the piston, comprising an expansi: bio metallic Ping adapted to ho sezifiaoii in the groove am. adzipiool when seotod. 2o Emile-'1 between the book thereo and tho opposed Willi oi the piston a (2 ohm: in communication with the interior of the piston, said ring being: provided in its outer face with uppoi" and lower rabbots, tho uppoi' will of tho lower z'ubhet and 119 lower waii of ihe uppiar i'abbet being at 511 stuntiaiiy rifi'iit anglers to Hie oi oi the ring. the lower waii of the iower rubber imaging with the our"? fszice of the .ringg; m, a point sii gifliy wed. above he iovyer (Ri e of "the rim hp :1 mm wiibei; in Y .nnmimiion mid chamber. pm or; ring mz'apieo in "mine, oil ring mowxo? pistons 1mm. 1 oi).

(Y groove in i'omimmicniion. w. mum" of the piston. ifii :m 0: b1: ms iiiiC ing: Mia groove and @1432 Z tween the hm}; 21d iikfi oppofeod w of the pi m :1 ('iliLYlliJfi' in wnmmmim '1!!! {1w mile-rim o'fhe. piston being prm'mod m tho oulm' fave and ioo the upper wall iower i. 1 and the lower wall f the, upm" mlfno ail suiisimn'izzlly rigor :mpgiei i to H1? ho sing. the lower Wail of the moi-gin with the outer Ems; of *xoint ssughtly spa/cod abovo the ring, tho uppoi z'obbet in, 

